Midnight Heat(1983; adult) [Diane]: Strangled with a belt by Jamie Gillis during sex in his hotel room, after he figures out that she'd been sent to kill him. We only see close-ups of Cheri's hand, Jamie's face, and both of their genitals during the murder. Her body is shown lying face-down on the bed afterwards in the background. (Nudity alert: X-rated) (Thanks to Neceros)